The murder of a homeless man, which is very similar in detail to a murder committed in 1947, leads Mulder and Scully to a legendary man-beast roaming the forest near Atlantic City.
The crews work to contain a dangerous forest fire and save a group of environmentalists protesting a housing development.
Mulder and Scully, reunited at last, head for an active volcano under a geological study and find a deadly life form that can survive in the searing heat of the crater, and is killing the scientists to avoid being discovered.
Dr Walden wakes up from his coma and tells Lex and Lionel that Clark is an alien; Chloe finds out Clark and Lana are together.
A jeweller abducts Chloe and Jimmy, and subjects them to a kryptonite-enhanced polygraph to measure their feelings for each other; Clark and Lois pretend to be involved to lure out the kidnapper and find their friends.
